苦心惨憺の末、考え出した企画が、会議で一瞬にして却下されちゃうんだからな。 After all the trouble we went to in coming up with that project, it only took them a second to shoot it down in the meeting.
(n)taxing one's ingenuity in devising something; agonizing over designing or creating something; making strenuous efforts to devise good ways and means to do something
Japanese Dictionary
